got the boat wet for the first time this year (since feb) and i have mystery noises already. motor is on its second season, mild 383, real reliable so far. i launched and warmed it up a bit, but i actually had a pop rivet chunk sticking up the gas pedal, so when i pumped the carb up it stuck at about 2200 rpm for a few minutes while i figured out the problem. then i got er on plane and it started knocking real loud. limped it back to the ramp, thuds heard at any rev abouve 1100. could the warm up have killed something? to loud and thud-like to be a lifter i think. any guesses?
also oil looked good before launch.